Morawiecki's broad-ranging speech to parliament focused on the economy, climate and demographics.
The address was scheduled to be followed by a vote of confidence in the new government headed by the conservative Law and Justice (PiS) party.
Morawiecki’s Cabinet was expected to gain the backing of the lower house, where the conservatives have a majority.
“Poles are a great nation with a great past. It’s time for a great future,” Morawiecki told deputies.
Law and Justice, allied with two smaller groupings in a United Right coalition, secured a second term in power after winning Poland's October 13 parliamentary elections.
The new government was sworn into office on Friday during a ceremony at the presidential palace in Warsaw.
Morawiecki was first appointed prime minister on December 11, 2017.
He said earlier this month that his new government would largely be a continuation of the previous one.
Law and Justice leader Jarosław Kaczyński said ahead of the elections that his party would bring in a raft of new policies during the first 100 days of its next term in power.
More to follow